I just read this great article at the Prevention Magazine site titled "Make Friends with Your Scale". ( online.prevention.com/scale/index.shtml)
They included a a food diary that showed how much weight could fluctuate within one day!
Quote:
Don’t let the number determine your self-worth! One 40-something Prevention reader shared how her weight fluctuated in 1 day.
7:15 AM: 133.8 lb, Right before hopping in the shower
8:30 AM: 137.5 lb, Wow, my clothes weigh 3.7 lb!
9:15 AM: 138.7 lb, Gained 1.2 lb from breakfast
10:30 AM: 137.9 lb, Bathroom break, -0.8 lb
1 PM: 135.8 lb, Lost 2.1 lb, thanks to a sweaty cardio workout
1:30 PM: 137.4 lb, Up 1.6 lb from lunch
4 PM: 138.6 lb, Gained 1.2 lb, probably from all the water I was drinking
5:30 PM: 137.5 lb, Bathroom break, -1.1 lb
11 PM: 140.8 lb, Yikes! Gained 3.3 lb—probably the pasta I ate and the wine!
11:30 PM: 137.1 lb, Undressed—huh, gained 3.3 lb since this morning
7:15 AM: 135.4 lb, Lost 1.7 lb while sleeping